38 Rev. T. A. Marshall's Monograph of 



2. Aphidius longulus, Marshall. 

 A. longulus, Marsh., lib. cit., p. 560, $ . 



9 Abdomen linear, very slender, three times as long as the head 

 and thorax. Head black ; thorax dark brown above, pale testaceous 

 beneath ; prothorax pale ; abdomen brown with a transverse band 

 on each suture, and the extremity, pale testaceous. Head somewhat 

 wider than the thorax ; oral parts and palpi pale. Antenna) 18- 

 jointed, very slender, as long as the abdomen, brownish testaceous 

 with the 1st and 3rd joints yellow. Thorax blackish above, reddish 

 in certain lights ; mesothoracic furrows effaced ; metathorax areated. 

 Wings hyaline with a greyish tinge ; squamulee and radicles pale 

 testaceous ; stigma pale yellowish ; basal nervures stout, distinct ; 

 cubital nervure extending to the end of the 1st cubital areolet. Legs 

 long, slender, testaceous ; coxse paler ; base of the hind coxae, femora 

 and tibise of the same pair, rufotestaceous ; hind tibiae shorter than the 

 tarsi. First abdominal segment more than three times as long as its 

 mean width ; petiole testaceous, condylus brown, testaceous at the 

 anterior end, somewhat dilated ; tubercles indistinct, situated below the 

 middle ; following segments much narrower than the thorax, forming 

 an elongate cylinder slightly compressed towards the apex ; 2nd seg- 

 ment testaceous at the extremity ; 3rd and 4th brown, paler on the 

 sutures ; 5th and following testaceous, tinged with brownish on the 

 sides ; a small brown patch at the extremity of the apical segment. 

 Valves of the terebra stout, blunt, black. ^ Unknown. Length, 1^ ; 

 exp. 2 lines. 



This female has almost the colours of urticce (Sp. 8) but 

 the differences of form forbid its union withthat species : 

 the remarkable length of the abdomen suffices to distin- 

 guish it from all those that follow. 



3. Aphidius pidus, Haliday. 



A. pictus, Hal., lib. cit. ,-95 ; Marsh., lib. cit., p. 563, $ , pi. 

 xviii. f. 7. 



$ Luteous ; eyes, a spot on the vertex, margin of the occiput, 

 superior orbits, three patches on the mesonotum, scutellum, meta- 

 thorax and 1st abdominal segment, black. Antennae black at the 

 apex. Mesonotum shining, very finely punctulate. Wings hyaline ; 

 squamulae and radicles yellowish, nervures fuscous, stigma, fusco- 

 ferruginous. Fore legs testaceous ; the 2nd pair slightly infuscated ; 

 hind legs fuscous with the trochanters, the underside of the femora 



